4 Mr. C. Chubb: Notes on [Ibis, 



Total length 197 mm., exposed culmen 15, wing 86, 

 tail 84, tarsus 28, middle toe with claw 26, hind toe with 

 claw 20. 



Adult female. Similar to the adult male, but smaller. 

 Wing 80 mm., tail 77. 



The specimens from which the descriptions are taken 

 were collected by F. Withington near Buenos Aires in 

 May 1886. 



Female juv. Head and hind neck black, the feathers 

 fringed with cream-white, the fringes becoming dull green 

 on the back; lesser upper wing-coverts grass-green ; bastard- 

 wing, greater upper wing-coverts, and innermost secondaries 

 blackish with cream-white edgings ; outer webs of quills 

 green ; rump and upper tail-coverts ochreous, with black 

 centres to the long ones ; tail-feathers dull olive-green, 

 edged with white at the tips ; sides of face pale brown ; 

 throat and hinder cheeks white slightly tinged with 

 sulphur-yellow ; upper breast dull white, broadly marked 

 with black, which fades off on the middle of the lower 

 breast; sides of breast, flanks, abdomen, thighs, and under 

 tail-coverts buff. 



The specimen on which this description is based was col- 

 lected by C. H. B. Grant at Ajo, Prov. of Buenos Aires, on 

 December 21^ 1908, and presented to the British Museum 

 by Mr. E. Gibson. 



Habitat. Eastern Argentina. 



Embernagra platensis poliocephala. 



Emberizoides poliocephalus Gray, Voy. ' Beagle,' iii. Birds, 

 1841, p. 98 : Monte Video and Maldonado. 



Embernagra platensis Sharpe, Cat. B. Brit. Mus. xii. 

 1888, p. 758: part, specimens c, d; Aplin, Ibis, 1894, 

 p. 170. 



Having examined four birds from Uruguay, including 

 those that Gray mentions in his descriptions of this form, 

 viz., Monte Video and Maldonado, I notice that the 

 Maldonado differs from that of the Argentine bird in the 

 somewhat darker grey on the face and throat, the white on 



